Doppelganger is an adventuring party card game that has a traitor mechanic. One or more of the players are doppelgangers trying to stop the party from finding three Artifacts of Light.
Doppelganger has a whiff of Resistance, BSG, and Dark Moon as players are asked to come along on an adventure and secretly throw cards into the mix and choose dice used in the impending battles. Will they throw in an important weapon, or a horrendous poison potion? Will they put in beneficial or detrimental dice? Add Doppelganger to your collection to find out!